U.S. Route 66 in Illinois

U.S. Route 66
U.S. Route 66
Will Rogers Highway; Main Street of America
	Route 66 highlighted in red
Route information
	Maintained by IDOT
Length	301 mi (484 km)
Existed	November 11, 1926–June 25, 1974
Major junctions
West end	US 66 at the Mississippi River towards St. Louis, MO
	I-64 / IL 3 in East St. Louis; I-70 / I-270 in Troy; I-80 in Joliet; US 30 in Joliet; US 34 in Berwyn; I-90 / I-94 in Chicago;
East end	US 41 in Chicago
Location
Country	United States
State	Illinois
Highway system
	United States Numbered Highway System; List; Special; Divided; Illinois State Highway System; Interstate; US; State; Tollways; Scenic;

U.S. Route 66 (US 66, Route 66) was a United States Numbered Highway in Illinois that connected St. Louis, Missouri, and Chicago, Illinois. The historic Route 66, the Mother Road or Main Street of America, took long distance automobile travelers from Chicago to Southern California. The highway had previously been Illinois Route 4 (IL 4) and the road has now been largely replaced with Interstate 55 (I-55). Parts of the road still carry traffic and six separate portions of the roadbed have been listed on the National Register of Historic Places.

^ U.S. Route Numbering Subcommittee (June 25, 1974). "U.S. Route Numbering Subcommittee Agenda" (Report). Washington, DC: American Association of State Highway and Transportation Officials. p. 7 – via Wikisource.